/**
 * Copyright (c) 2011-2023, James Zhan 詹波 (jfinal@126.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.jfinal.aop;

import java.util.ArrayList;
import java.util.List;

/**
 * InterceptorStack.
 */
public abstract class InterceptorStack implements Interceptor {

    private Interceptor[] inters;
    private List<Interceptor> interList;

    public InterceptorStack() {
        config();

        if (interList == null)
            throw new RuntimeException("You must invoke addInterceptors(...) to config your InterceptorStack");

        inters = interList.toArray(new Interceptor[interList.size()]);
        interList.clear();
        interList = null;
    }

    protected InterceptorStack addInterceptors(Interceptor... interceptors) {
        if (interceptors == null || interceptors.length == 0) {
            throw new IllegalArgumentException("Interceptors can not be null");
        }

        if (interList == null) {
            interList = new ArrayList<Interceptor>();
        }

        for (Interceptor ref : interceptors) {
            if (AopManager.me().isInjectDependency()) {
                Aop.inject(ref);
            }
            interList.add(ref);
        }

        return this;
    }

    public final void intercept(Invocation inv) {
        new InvocationWrapper(inv, inters).invoke();
    }

    public abstract void config();
}



